Luis,
Do you mean 8 to 10 microinches? At 40 microinches per micron 8 to 10 microns would be 320 to 400 microinches which sound more like electrolytic plating rather than immersion plating.
Regards,
George
George M. Wenger (908)-546-4531
Reliability Engineer
RF Power Amplifier Group
Andrew Corporation, 40 Technology Drive, Warren, NJ 07059
[log in to unmask]
-----Original Message-----
From: Luis Gallegos [mailto:[log in to unmask]]
Sent: Monday, January 26, 2004 2:47 PM
To: 'TechNet E-Mail Forum.'; Wenger, George M.
Subject: RE: [TN] PBGA Void/pin holes
George
Is about 8 to 10 microns thick
-----Original Message-----
From: Wenger, George M. [mailto:[log in to unmask]]
Sent: Monday, January 26, 2004 10:44 AM
To: [log in to unmask]
Subject: Re: [TN] PBGA Void/pin holes
Luis,
How thick is your silver plating on your boards?
Regards,
George
George M. Wenger (908)-546-4531
Reliability Engineer
RF Power Amplifier Group
Andrew Corporation, 40 Technology Drive, Warren, NJ 07059
[log in to unmask]
-----Original Message-----
From: Luis Gallegos [mailto:[log in to unmask]]
Sent: Monday, January 26, 2004 11:02 AM
To: [log in to unmask]
Subject: [TN] PBGA Void/pin holes
Good morning Technetters.
I am having some occasionally voids/pin holes on our PBGA. We are currently
using NC293 Sn63/Pb37 Aim solder paste. The board is silver plated. Printing
with a 6 mil stencil.
Is it normal to have occasionally voids?
We have bake our PBGA's prior to reflow, and also work with the oven
profile. Any suggestions.
Thank you
Luis A Gallegos
Automation Senior Technician
SANMINA-SCI
Pleasant Prairie WI
Phone: 262 947-7700
[log in to unmask]
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